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temperatures.c

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

/**
 * Auto-generated code below aims at helping you parse
 * the standard input according to the problem statement.
 **/
int main()
{
    int n; // the number of temperatures to analyse
    scanf("%d", &n); fgetc(stdin);
    char temps[257]; // the n temperatures expressed as integers ranging from -273 to 5526
    fgets(temps,256,stdin); // the n temperatures expressed as integers ranging from -273 to 5526

    // Write an action using printf(). DON'T FORGET THE TRAILING \n
    // To debug: fprintf(stderr, "Debug messages...\n");

    fprintf(stderr, "%d\n%s\n", n, temps);
    
    if(n == 0)
    {
        printf("0\n");
        return 0;
    }

    int hn = -273; //highest negative temperature
    int lp = 5526; //lowest positive temperature
    
    char *str = strtok(temps, " ");
    while(str != NULL)
    {
        int temp;
        sscanf(str, "%d", &temp);
        fprintf(stderr, "%d\n", temp);
        str = strtok(NULL, " ");
        
        if(temp > 0)
        {
            if(temp < lp)
            {
                lp = temp;
            }
        }
        else
        {
            if(temp > hn)
            {
                hn = temp;
            }
        }
    }
    
    int r = lp + hn;
    
    if(r > 0)
    {
        printf("%d\n", hn);
    } 
    else
    {
        printf("%d\n", lp);
    }

    return 0;
}